Malicious PDF — malware analysis report

Static analysis result for SHA-256 a93750878c58c5d1…

MALICIOUS

PDF

47.0 KB Created: 2020-07-30 11:10:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be4e730d7902c73db111d08a44d55a23 SHA-1: 8efde1d5fed8408fb9d0255ceed951466ead546f SHA-256: a93750878c58c5d180cb6e4fd5689036a27da3c41abebc0eff0c71401ea705d3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, suggests a lure related to bank exam preparation. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=blood+relation+questions+pdf+for+bank+exam In PDF document text
    • http://files.landzmanagement.com/uploads/1/3/2/6/132695701/5663068.pdfIn PDF document text
    • http://files.mcguirefamilyfarms.com/uploads/1/3/1/4/131455636/putusivuzoxebexal.pdfIn PDF document text
    • http://files.christopherdavidgauthier.com/uploads/1/3/1/4/131437216/640d86.pdfIn PDF document text
    • http://files.protectourspace.org/uploads/1/3/1/6/131636990/7831873.pdfIn PDF document text
    • http://files.photosbyjcr.com/uploads/1/3/1/4/131454172/c2c2d8584.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/97611407242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/fuveji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4071/8496/files/divokabeluzutexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3082/files/bapopo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/jepakinogasaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2103/2859/files/kuzudopibutemuzuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/soreluseloxajakikolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1779/5741/files/furolironuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4952854333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1955/0370/files/71130909036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/potapakovelibugor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35035436777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0237/8915/files/lijelowirodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9857/0909/files/kagazo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C5 5516 bytes
SHA-256: ebdcf332b0fcb4d9916c6c4dd3397c0bd132b4408d5e330c536595abd81427d9
font_01_sfnt_off00008b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B67 10356 bytes
SHA-256: 0edbce1cb4ea47e47c54853b2d53720327de27b0bf1e1ba1a02f7ec0860e3e3e

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